Intermap Technologies Inc.20020221n69w150a1.tif1remote-sensing imageGLOBAL Terrain Orthorectified Radar ImageVersion 1Englewood, COIntermap Technologies Inc.\\earthwhere-sun\d0\noam\us\ak\kuparuk2001\ori\n69w150a1.tif\\earthwhere-sun\d0\noam\us\ak\kuparuk2001\ori\n69w150a1.tif\\earthwhere-sun\d0\noam\us\ak\kuparuk2001\ori\n69w150a1.tifn69w150a1.tif
This data set is an orthorectified radar image (ORRI) product that populates
the GLOBAL Terrain product catalog. The ORRI products are generated
using the Intermap STAR-3i airborne interferometric synthetic aperture
radar (SAR) system mounted in a LearJet 36A aircraft.
The GLOBAL Terrain ORRI data files are digital
representations of the radar response signal. ORRIs consist of a georeferenced
pixel for a number of ground positions at regularly spaced intervals. These
digital data files are produced by Intermap Technologies Inc.(Intermap) as
part of the GLOBAL Terrain product line and are licensed in 7.5-minute tiles
for areas located between 0 and 56 degrees North/South. Data for locations above
56 degrees North/South are licensed in 15-minute by 7.5-minute tiles.
GLOBAL Terrain ORRI products represent the first reflective surface as
illuminated by the radar. Accuracy statements are based on areas of moderate
terrain. Diminished accuracies are to be expected in areas of extreme terrain
and dense vegetation.
The ORRI data for 7.5-minute units correspond to the USGS 1:24,000 and
1:25,000 scale topographic quadrangle map series for available areas in
the United States and throughout the world. Each 7.5-minute ORRI is based
on 2.5m pixel resolution using the Universal Transverse Mercator (UTM) projection.
Each 7.5- by 7.5-minute tile provides full coverage with overlap into adjacent
tiles.
The original ORRI is unenhanced and may appear dark when viewed. Both the
original ORRI and an ORRI with a customized linear stretch enhancement are
provided. The stretched ORRI will appear brighter and is easy to view without
additional enhancements.
The purpose of this data set is to provide a source for current and
accurate orthorectified radar images with a horizontal accuracy of 2.5
meters.
The STAR-3i system employs three principle technologies: X-band Horizontal
-Horizontal (HH) polarized SAR, a ring laser-based inertial measurement unit
(IMU), and Differential Global Positioning System (DGPS). STAR-3i was developed
by the Environmental Research Institute of Michigan (ERIM) under contract to
the U.S. Defense Advanced Research Projects Agency (DARPA).
The system is comprised of two X-band radar antennae that collect data
simultaneously. The set of acquired data are "interfered" by a digital
correlation process to extract terrain height data and geometrically
correct radar images. STAR-3i uses post-processed DGPS data, together with
precise inertial measurement data, to attain highly accurate positioning
control. Precise terrain height and positioning data are enhanced by
careful calibration of the baseline separating the two antennae.
The STAR-3i system accuracy has been independently validated by tests
conducted by the U.S. Army Topographic Engineering Center, the Institute
of Navigation, Stuttgart University and by NASA. A summary of test results
are accessible at <URL:http://www.globalterrain.com>.
The GLOBAL Terrain folder name describes the geographic location of a tile.
The GLOBAL Terrain file name encapsulates the GT processing level and the product
version number. A complete explanation of the GLOBAL Terrain file name can
be found in the GLOBAL Terrain Product Handbook. <URL:http://www.globalterrain.com/gt.asp#Product Handbook>.
en2001083020010830REQUIRED: The year (and optionally month, or month and day) for which the data set corresponds to the ground.
The above dates refer to the time of field data acquisition and therefore reflect
ground conditions at that time.
CompleteOngoing-150.345808-149.90253269.13279768.991929606128.750000623128.7500007656551.2500007671481.250000MEL_Scientific-Engineering_Field_ThesaurusElevationCartographyGeodesyGeographyHypsographyMappingPhotogrammetryStereophotogrammetryTopographyRadarInterferometricRemoteSensingSARDEMDTMDSMORRIORISTAR-3iINSARIFSARIFSAREGEOSARheightNoneUSAAlaskaKuparukIIMEL_Environmental_Domain_ThesaurusTerrainEarthSurfaceBaldGroundFirstNone2001AugustPurchaseLicense AgreementIntermap Technologies Inc.Vice-President E-Businessmailing address9785 South Maroon Circle, Suite 150EnglewoodCO80112-5928USA(303) 708-0955(303) 708-0952mailto:info@globalterrain.com<URL:orripthnv1.jpg>Thumbnail of ORRI in greyscale8 bit jpeg
This data was produced by the Airborne Operations group and the GT Products group
at Intermap Technologies Inc.
GLOBAL Terrain End User's License Agreement (GTEULA)License Agreement.
The user agrees to read and abide by the
License Agreement. Copyright Intermap Technologies Inc., 1997-2001. All rights reserved.
Refer to the license document on the website. <URL:http://www.globalterrain.com/gt.asp#GT20EULA>.
Microsoft Windows 2000 Version 5.0 (Build 2195) Service Pack 4; ESRI ArcCatalog 9.0.0.535Intermap Technologies Inc.20020221GLOBAL Terrain: "dsm3thnv1.jpg"1Digital Elevation Model (DEM)GLOBAL Terrain Digital Surface Models (DSMs)Version 1<URL:http://www.globalterrain.com><URL:http://www.intermaptechnologies.com><URL:http://www.globalterrain.com/gt.asp#Product Handbook><URL:dsm3thnv1.jpg>Raster Dataset
Calculation of the orthorectified radar image is described in the GT Product
Handbook User's Guide. <URL:http://www.globalterrain.com/gt.asp#Product Handbook>
<URL:qcv1.pdf> contains a final Quality Control report.
Coverage maps are provided for each area of acquisition.
<URL:http://www.globalterrain.com/GTCoverage.html>
All data products are 2.5 meters RMSE or better in horizontal accuracy. For
details, see <URL:http://www.globalterrain.com/gt.asp#Product Handbook>.
This GLOBAL Terrain ORRI data product was derived using Intermap Technologies
STAR-3i airborne interferometric SAR data acquisition system. The flying height is
30,000 feet Above Mean Ground. The primary look direction is East. The secondary
(alternate) look direction is South. The phase unwrapper utilized is ifprocT.
Most incidences of non-data areas are due to radar shadow and layover due to steep terrain.
Radar shadow is a factor of the local topography. It is often found in mountainous regions
and the urban canyons of built-up areas. Occurances of non-data areas within an ORRI are
dependent on the look direction of the radar. Areas in which no data is collected are
assigned the value 255. Null data such as shadows within an image are assigned the value 0.
20020221Metadata imported.C:\DOCUME~1\dbautts\LOCALS~1\Temp\xml4FD.tmp2004102614571300RasterPixel597268002.5000002.50000081Upper LeftFALSENone1pixel codesFALSETIFFrow and column2.5000002.500000metersUniversal Transverse Mercator50.999600-153.0000000.000000500000.0000000.000000D_WGS_1984WGS_19846378137.000000298.257224GCS_WGS_1984WGS_1984_UTM_Zone_5N8 bit GeoTIFF
The ORRI is an 8 bit georeferenced TIFF image on a 7.5-minute
geographic (lat/long) grid in UTM projection. The origin of the
pixel is center center.
<URL:http://www.globalterrain.com/gt.asp#Product Handbook>Digital number value per pixel.Greyscale value assigned to pixel to represent magnitude of radar signal return.<URL:http://www.globalterrain.com/gt.asp#Product Handbook>0255digital number values1
>Project Information
>Project Area: Kuparuk II Alaska
>Intermap Project Number: 01223m
>Mission # (s): 336
>Intermap Processing AML Version: 1.0.6, 20010920
>ISO 9001 Certification No.: A8379
>UTM_Easting_(meters): Min. 405300 Max. 422297.5
>UTM_Northing_(meters): Min. 7613542.5 Max. 7628470
<URL:http://www.globalterrain.com/gt.asp#Product Handbook>20041026Intermap Technologies Inc.REQUIRED: The person responsible for the metadata information.Vice-President E-Businessmailing address9785 South Maroon Circle, Suite 150EnglewoodCO80112-5928USA(303) 708-0955(303) 708-0952mailto:info@globalterrain.comFGDC Content Standards for Digital Geospatial MetadataFGDC-STD-001-1998enlocal timehttp://www.esri.com/metadata/esriprof80.htmlESRI Metadata Profile{06431AD2-A592-492B-9001-5D2661CEEB21}2004102614571300FALSE20041026145714002004102614571400Microsoft Windows 2000 Version 5.0 (Build 2195) Service Pack 4; ESRI ArcCatalog 9.0.0.535n69w150a1.tif606128.75623128.757671481.257656551.251-150.345808-149.90253269.13279768.9919291ISO 19115 Geographic Information - MetadataDIS_ESRI1.0datasetDownloadable Data38.77438.774002file://\\earthwhere-sun\d0\noam\us\ak\kuparuk2001\ori\n69w150a1.tifLocal Area Network38.774Raster DatasetWGS_1984_UTM_Zone_5N268002.5Meter1 Meter = 1 Meter(s)59722.5Meter1 Meter = 1 Meter(s)120041026